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8th Gr Sci Ch 4 Test
8th Grade Science Chapter 4 Test Review
Question | Answer |
---|---|
Even though God cursed the earth because of man's sin, and parts are unfriendly to life, how can we tell that God designed the earth to sustain life? | Every aspect is designed perfectly |
What three things do most kinds of life need? | water, oxygen, sunlight |
How does the tilt of the earth's axis improve conditions for life on earth? | The tilt creates more suitable temperatures by hiting the whole earth with sunlight rather than just one part; Temperate |
How does water help distribute heat more evenly around the world? | When water heats up it circulates |
Name three features of the atmosphere that support life on Earth. | It's transparent, offers protection/physical shield, perfect amount of oxygen (no toxic gases) |
What might happen to the earth if it did not have a strong magnetic field? | Dangerous energy radiation particles from space could reach it's surface, harming or killing living things |
What do you think would happen to the habitability zone if the sun were much smaller? | It would shrink and we would freeze |
If the earth orbited a smaller sun at its current distance, what would the earth be like? | Our days would be shorter and would freeze |
What could happen if the earth were in the center of the galaxy or in one of its spiral arms? | Comet collisions, dangerous radiation |
If God had created the earth with an opaque atmosphere, would Genesis 1:14 make any sense? Explain. | No because it would always be dark (no sun, moon, stars) |
Why were James Hutton and Charles Lyell wrong when they applied the principle of uniformity in order to explain events in the distant past? | They assumed that the speed at which the earth has been changing now, has always been this speed |
What term identifies a viewpoint based on the belief in a very old Earth? | deep time view |
Why is it possible to even make predictions in science? | the principle of uniformity says that the universe is orderly and predictable |
Medical x-rays are to doctors as ____________ are to geologists. | seismic waves |
How was the Moho Discontinuity discovered? | They found that there was a jump in the speed of seismic waves at particular depths below the earth's surface |
What special protective feature do geologists believe originates deep within the earth and most likely within the core? | Iron that makes a magnetic field |
Why are coal, petroleum and natural gas considered non-renewable resources? | They cannot be replenished in our lifetime |
What do we call all efforts to identify, obtain, and use natural resources wisely? | resource management |
What can happen to natural resources needed by living things that makes them unfit for use? | People can over use our natural resources |
the rocky surface of the earth | lithosphere |
the mass of gases that surround the earth | atmosphere |
the study of the earth | geology |
The theory that once the continents were one big land mass that were broken up into pieces and drifted apart | The plate tectonic theory |
Any raw material that we use from our environment | natural resources |
Resources that get used up and can not be replenished | Non renewable resources |
Resources that can be replenished easily and have an unlimited supply | Renewable resources |
The center of the earth | the core |